Removing tooling marks from aluminum for anodizing?

I have machined some aluminum parts which will get hard coat anodized. I would like to remove the tooling marks first and get a nice uniform surface. I don't have access to a tumbler, not sure that would do it anyway. Could I have them bead blasted first? Will that be sufficient to remove/blend the tooling marks? Is there a better way?

As for which light blasting media, crushed walnut shells might be the cat's miaow for this, but if you're not doing it yourself, make sure it's a reputable company and check they don't add something more abrasive to the walnut media.
If the machining texture runs too deep for that I'd try glass bead

If it's only a few parts you can use scotchbrite along with soapy water to smooth them up. Of course, if it is a production lot this is not feasible, but around here we send out small lots of parts for a project and they all get scrubbed to a satin finish first. Its a bit of elbow grease, but well worth it, as the finished product is very nice.

A 10 inch long piece of hardwood dowel with a slot an inch or so from the end, stuff some steel wool in the slot then wind it around the dowel nice and tight, spinn it in a drillpress fast as it will go and it will conform to almost any profile and remove those cutter lines, I wouldn't want to do a bunch of them that way. We have ours sticking out of a downdraft table. We started out with them in drill presses, it is good in that you can achieve a light grain in one direction and it looks nice after annodize.

Thanks for the suggestions. It is only a couple of pieces, but a lot of contours so a belt or spindle would not reach a lot of it. I could wet sand them lightly but that always seems to leave its own marks. I will try the scotchbrite and soupy water - haven't tried that one yet.

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